[Current resistance status of Escherichia coli strains from bovine mastitis milk samples].
Between December 1996 and March 1997, 95 E.coli strains were isolated from mastitis milk samples from 95 different animals. In 29.5% resistance could be observed against one or several of the examined antibiotics. However, Cefoperazone, Polymyxin B, Colistin and Gentamycin proved effective against the majority of these strains. Between 0 and 23% of E.coli were resistant against the single tested antibiotics. As opposed to earlier investigations a smaller number of Chloramphenicol-resistant strains could be found. One strain with multiple resistance was also resistant against Gentamycin. However, in the treatment of mastitis the resistance of a particular agent is only one among several contributing factors.
Stephan
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Institut für Lebensmittelsicherheit und-hygiene der Universität Zürich.
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D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology* / Q000627:therapeutic use; D002417:Cattle; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects*; D004927:Escherichia coli Infections / Q000188:drug therapy / Q000382:microbiology / Q000662:veterinary*; D005260:Female; D008414:Mastitis, Bovine / Q000188:drug therapy / Q000382:microbiology*; D008892:Milk / Q000382:microbiology*
D000900:Anti-Bacterial Agents
Aktuelle Resistenzsituation von Escherichia-coli-Stämmen aus bovinen Mastitismilchproben.